Device for igniting gas-jets



M. FISCHER, DEVICE FOR IGNITING GAS JETS.

APPLICATION FILED JULY26, 1919.

1,327,813, Patented Jan. 13,1920.

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DEVICE 'IGNITING GAS-JETS.

Specification of Letters Patent. Patented J a11. 13 1920.

Application filed July 26, 1919. Serial No. 313,508.

' To all whom itmay concern:

the actuation of an arm or lever serves to place a spring under tension and re leaseit, the tension of the spring being utilized to move a frict onal surface over a plece of pyrophorous metal producing thereby a garb of spark adapted to kindle thegas.

' The main object of the invention is-to provide'a device of the class described which shall be si n ale strong and durable in construction an adapted to yield the highest desirable result in operation.

Other objects of the invention relate to the construction of the parts cooperating all of which will be more. clearly set forth in the following specification.

' With the above objectsv in view the invention resides in the parts and in combinations of parts hereinafter described and articularly set forthin the claims appende hereto.

In order that my inventionm'ay be clearly understood, 1 have illustrated the same in the a o p y ng ra ings wh r in;

Figure 1 is a device in aside elevation.

Fig. 2 is a section on line AB ofFig. 1.

Fig. 3 shows a'se'eond form of construction in a side view.

Fig. 4 is a section on line C-D of Fig. 3.

Fig. 5 shows the upper portion of the device on a larger scale.

Referring to the drawings 1 denotes a handle to one end of which a bracket 2 is fastened by a screw 8. In the shanks of the bracket 2 a rod 3 is journaled the lower end of which is bent-off at a right angle forming an arm 4 crossing the handle 1. By means of the arm 4 the rod 3 may be rotated by the thumb of a hand grasping the handle 1 as shown. Between the horizontal shanks of the bracket 2 two coiled springs 5 and 10 are arranged on the rod 3. One end of the spring 5 is secured to the screw 8 and the upper end is fastened to the rod 3 by means of a pin 6. The spring 10 is tightly coiled around the rod 3 and the upper end is fastened to a disk 9 loosely mounted: on rod 3. The disk 9 is provided with sharply cut teeth against which piece 11 of pyrophorous metal is pressed vby means of a: spring 13. The piece 11 is slidably arranged in a guide 12 provided on the bracket- 2. The spring 13 w'hic'hhis. formed bya piece of springy wire is fastened to the bracket 2 by means-of a screw 14 passing through an eye formed thereon. If rod 3 is rotated by the arm 4 the spring 5 is tensioned and if arm 4 islet loose by the thumb.

the spring 5 returns the rod 3 to its normal position in which arm 4 abuts on the ham die 1. Spring 10 is wound in such direction and so tightly that by rotating, the rod 3 against the action of the spring 5 it does not partake of the rotation of the rod 3, it

being held by the friction of piece lllon disk 9. As soon as the arm 4 is released therod 3 acts on the spring 10 by frictionand winds the spring 10 closer in such a manner that i the spring 10 is firmly wound on the rod 3 and rotates therewith, overcoming the friction between disk 9 and piece 11." The disk 9 is rapidly rotated causing sparks to be emitted which ignite the gas.

On the lower end of the handle 1 a bore 16 is provided for storing spare pieces 11. The pieces 11 are held by a pin 17 crossing the .loore 16. Pin 17 may beudisplacedby hand if a piece 11 istogbe got. To insert a piece 11 in the guide 12 the wire13 is bent backnntil itsfree end is-out of the pin 20* is fastened. On the top endof said guide 12.. The device shown in. Figs. 3to'5 comprises a handle 1 of wood in which a pin 20 a plate 21 is fixed for instance by riveting. Plate 21 is provided with a guide for a piece 22 of pyrophorous metal which is pressed against a disk 24 by means of a spring 23. The upper end of said spring 23 is bent to enter the said guide and the lower end is driven into the handle 1. The disk 24 is fastened to a hollow shaft 25 which is loosely mounted on the pin 20. On the shaft 25 two coiled springs 27, 29 are arranged one above the other. The lower end of spring 27 is fixed to a pin 30 of the handle 1. An arm 26 is rigidly fixed to the shaft 25 and the upper end of spring 27 is rigidly connected to the shaft 25 by soldering. The upper spring 29 is loosely wound on the shaft 25, its upper end is fixed to the disk 24) by means or a pin. The action of the device is similar to that shown in'Fig. 1.

The arm 26 is rotated by means of the thumb of a hand grasping the handle 1, the spring 27 is tensioned as the shaft 25 is rotated. WVhile spring 27 is tensioned the disk 24k is held stationary by the friction of piece 22. As soon as the arm 26 is released the shaft 25 rotates and the spring 29 is tightly drawn on the said shaft 25 partaking of the rotation thereof. Spring 29 takes the disk 2t with it which rubs off particles of the piece 22 which form sparks adapted to ignite a jet of gas.

The device is very handy. It may be used in the household to ignite the gas jets of burners in cooking ranges and so on.

Having described the invention, what I claim and wish to secure: by Letters Patent is:

1. A device for igniting a jet of gas comprising in combination a handle a shaft rotatably mounted on said handle a serrated disk loosely mounted on the shaft, a piece of pyrophorous metal, a spring pressing said piece against said disk, a spring loosely surrounding said rotatable shaft one end thereof being attached to the said disk, at second spring, one end of said second spring being fixed to said rotatable shaft and the other end on the handle, an arm fixed to said rotatable shaft running across the handle substantially as described.

2. A device for igniting a jet of gas comprising in combination a handle a pin fixed in one end of said handle, a hollow shaft rotatably mounted on said pin, a serrated disk loosely mounted on said hollow shaft, a guide fixed to the upper end of said pin, a piece of pyrophorous metal arranged Within said guide, a spring pressing said piece against the disk, a spring loosely surround ing said rotatable shaft one end thereof being attached to the said disk, a second spring, one end of said second spring being fixed to said rotatable shaft and the other end on the handle, an arm fixed to said rotatable shaft running across the handle substantially as described.

8. A device for igniting a jet of gas comprising in combination a handle a pin fixed in one end of said handle, a hollow shaft rotatably mounted on said pin, a serrated disk loosely mounted on said hollow shaft, a guide fixed to the upper end of said pin, a piece of pyrophorous metal arranged within said guide, a spring formed of a piece of Wire fixed with one end to the handle and having a bent-off portion engaging said guide and pressing said piece against the disk, a spring loosely surrounding said rotatable shaft one end thereof being attached to the said disk, a second spring, one end of said second spring being fixed to said rotatable shaft and the other end on the handle, an arm fixed to said rotatable shaft running across the handle substantially as described.

4. A device for igniting a jet of gas comprising in combination a handle a pin fixed in one end of said handle, a hollow shaft rotatably mounted on said pin, a serrated disk loosely mounted on said hollow shaft, a guide fixed to the upper end of said pin, a piece of pyrophorous metal arranged within said guide, a spring formed of a piece of wire fixed with one end to the handle and having a bent-off portion engaging said guide and pressing said piece against the disk, a spring loosely surrounding said rotatable shaft one end thereof being attached to the said disk, a second spring, one end of said second spring being fixed to said rotatable shaft and the other end on the handle, an arm fixed to said rotatable shaft running across the handle, a bore at the free end of said handle adapted to receive spare pieces of pyrophorous metal, a pin crossing said bore adapted to hold said spare pieces substantially as described.

In testimony whereof I affix my signature.

" MARTIN FISCHER. 

